A flock of wintering dunlins takes to the air over Washington State's Skagit Valley in winter 2009. The dunlins are among the 50,000-odd shorebirds that visit the region during their annual migrations along the Pacific flyway.
Conservationists hope to replicate the walking-wetlands concept throughout the flyway and around the world to help arrest declining shorebird populations.
"Loss of wetlands in coastal areas for farming has happened all around the world, so it could be implemented anywhere," the Nature Conservancy's Julie Morse said.
Photograph courtesy Steve Mlodinow, the Nature Conservancy